1IJX

CRYSTAL STRUCTURE OF THE CYSTEINE-RICH DOMAIN OF SECRETED FRIZZLED-RELATED PROTEIN 3 (SFRP-3;FZB)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.220 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Insights into Wnt binding and signalling from the structures of two Frizzled cysteine-rich domains.

Dann III, C.E.Hsieh, J.C.Rattner, A.Sharma, D.Nathans, J.Leahy, D.J.

(2001) Nature 412: 86-90

  • DOI: 10.1038/35083601
  • Primary Citation of Related Structures:  
    1IJY, 1IJX

  • PubMed Abstract: 
  • Members of the Frizzled family of seven-pass transmembrane proteins serve as receptors for Wnt signalling proteins. Wnt proteins have important roles in the differentiation and patterning of diverse tissues during animal development, and inappropriate activation of Wnt signalling pathways is a key feature of many cancers ...

    Members of the Frizzled family of seven-pass transmembrane proteins serve as receptors for Wnt signalling proteins. Wnt proteins have important roles in the differentiation and patterning of diverse tissues during animal development, and inappropriate activation of Wnt signalling pathways is a key feature of many cancers. An extracellular cysteine-rich domain (CRD) at the amino terminus of Frizzled proteins binds Wnt proteins, as do homologous domains in soluble proteins-termed secreted Frizzled-related proteins-that function as antagonists of Wnt signalling. Recently, an LDL-receptor-related protein has been shown to function as a co-receptor for Wnt proteins and to bind to a Frizzled CRD in a Wnt-dependent manner. To investigate the molecular nature of the Wnt signalling complex, we determined the crystal structures of the CRDs from mouse Frizzled 8 and secreted Frizzled-related protein 3. Here we show a previously unknown protein fold, and the design and interpretation of CRD mutations that identify a Wnt-binding site. CRDs exhibit a conserved dimer interface that may be a feature of Wnt signalling. This work provides a framework for studies of homologous CRDs in proteins including muscle-specific kinase and Smoothened, a component of the Hedgehog signalling pathway.


    Organizational Affiliation

    Department of Biophysics and Biophysical Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SECRETED FRIZZLED-RELATED SEQUENCE PROTEIN 3A, B, C, D, E, F127Mus musculusMutation(s): 1 
Gene Names: SFRP-3FrzbFizFreFrzb1Sfrp3
UniProt
Find proteins for P97401 (Mus musculus)
Explore P97401 
Go to UniProtKB:  P97401
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download Ideal Coordinates CCD File 
G [auth A]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.220 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 96.05α = 90
b = 48.69β = 90.8
c = 83.31γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
SOLVEphasing
Omodel building
CNSrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2001-07-11
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2014-05-28
    Changes: Structure summary
  • Version 1.4: 2018-05-30
    Changes: Advisory, Data collection, Derived calculations